CN1739461A - Hystero cavity tissue aspirator - Google Patents
Hystero cavity tissue aspirator Download PDFInfo
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- CN1739461A CN1739461A CN 200410053982 CN200410053982A CN1739461A CN 1739461 A CN1739461 A CN 1739461A CN 200410053982 CN200410053982 CN 200410053982 CN 200410053982 A CN200410053982 A CN 200410053982A CN 1739461 A CN1739461 A CN 1739461A
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Abstract
The hystero cavity tissue aspirator includes one miniature peristaltic pump and one duct. The peristaltic pump has control circuit comprising CPU with one write in memory; rectifier and power source circuit; input and display circuit comprising buttons, digital display, line scan driver and shift register; motor drive circuit comprising one bi-directional SCR and one thyristor; and negative control circuit comprising pressure sensor, differential amplifier and voltage/frequency converter. After the CPU outputs the motor controlling signal, the motor rotates for artificial abortion operation. During the operation, the time and negative pressure are displayed automatically, the negative pressure may be regulated and maintained automatically, the process is recorded automatically and the machine may be stopped automatically if necessary. The present invention has raised operation safety and success ratio.
Description
[technical field]
The uterine cavity inner tissue that the invention provides a kind of electronization, intellectuality, miniaturization attracts operating theater instruments, is used for gynecological and examines erasion and very early pregnancy artificial abortion.
[background technology]
One of common method that stops very early pregnancy clinically is an artificial abortion, i.e. the negative pressure straw art.No matter this surgical drainage is manually or electronic, all can not control the variation of negative pressure, when negative pressure is excessive, can reflux; When negative pressure is not enough, again can not artificial abortion.Therefore tend to suction pipe repeatedly be entered uterine cavity and easily infect, perhaps not embryonal tissue's full scale clearance.For overcoming this problem, the applicant once imagined with miniature peristaltic pump and conduits join and designed a kind of anti-very early pregnancy device (consulting Chinese patent 01252870.6), although miniature peristaltic pump belongs to miniaturization, but it is originally and is used for the laboratory drawing liquid, smokes oxygen, working pressure range waves between 0 to 760 millimetres of mercury, can not control and regulate.And artificial abortion patient's interindividual variation is very big, uses peristaltic pump simply and implements surgical drainage, can not realize electronization, intelligent automatic control and regulate negative pressure, finally can cause surgical effect undesirable.
[summary of the invention]
The present invention utilizes cpu chip and interlock circuit combination that original miniature peristaltic pump is transformed; when implementing artificial abortion, realize electronization, intelligent; can change voluntarily according to situation in the operation and regulate negative pressure, the writing time that keeps stable; autostop in case of necessity; prevent accident; improve the safety of operation, guarantee the success of operation.
Technical scheme of the present invention is: a kind of suction apparatus for uterine cavity tissues comprises miniature peristaltic pump and conduit; The control circuit of this peristaltic pump comprises:
(1) CPU; This CPU is furnished with one and writes bin;
(2) rectification power circuit;
It is characterized in that, also comprise
(3) input display circuit, by button, nixie display, the line scanning driver, shift register is formed, the one group of signal scanning output pin of CPU and the signal scanning input pin of line scanning driver connect one to one, pin is returned in the scanning that is collected to CPU separately behind button of branch's series connection when the signal scanning output pin of line scanning driver is connected to the incoming end of nixie display, another group signal scanning output pin of CPU is connected with the signal scanning input pin of shift register, and the outfan of shift register is connected to another group signal incoming end of nixie display;
(4) motor-drive circuit, form by a two-way controllable silicon and a photothyristor, the control signal output pin of CPU connects the input of photothyristor, and the outfan of photothyristor is connected to the control signal input of bidirectional triode thyristor, and the outfan of bidirectional triode thyristor connects motor;
(5) negative pressure control circuit, by pressure transducer, differential amplifier, electric voltage/frequency converter and DC/DC modular converter are formed, the inductive head of pressure transducer is communicated with conduit, the voltage signal output end of pressure transducer is connected to the input of differential amplifier, the outfan of differential amplifier is connected to the input pin of electric voltage/frequency converter, the electric voltage/frequency converter output pin is connected to CPU pressure signal input pin, the Input voltage terminal of DC/DC modular converter is inserted by the output voltage terminal of rectification power circuit, and the output voltage of DC/DC modular converter is connected to pressure transducer and differential amplifier.
The inductive head of aforesaid pressure transducer adopts tee pipe coupling to be communicated with conduit usually.
The present invention adopts the core of singlechip CPU chip as the control circuit of peristaltic pump, and control sequence is solidificated in the ROM program area of chip in advance.When the operator configures pump operated time, pump swabbing pressure with button after, press the operation key, CPU output motor control signal, motor rotation is implemented artificial abortion.Automatically show operating time and instant negative pressure in the operation; can according to circumstances change voluntarily and regulate negative pressure, the writing time that keeps stable, autostop is realized electronization, intelligentized purpose thereby reach in case of necessity; prevent accident, improve the safety and the success rate of operation.
Such scheme stops up the conduit that leads to pressure transducer for the uterine cavity inner tissue that prevents sucking-off, can be connected in series a filter in described conduit, perhaps is provided with an interior siphunculus in leading in the interface that connects the pressure transducer inductive head of this tee pipe coupling.
[description of drawings]
Fig. 1 is a population structure sketch map of the present invention.
Fig. 2 is control circuit figure of the present invention.
Fig. 3 is a control procedure schematic diagram of the present invention.
Fig. 4 is that the inductive head of pressure transducer is communicated with one of sketch map with conduit with tee pipe coupling.
Fig. 5 is that the inductive head of pressure transducer is communicated with two of sketch map with conduit with tee pipe coupling.
[specific embodiment]
Consult Fig. 1 and Fig. 2, a kind of suction apparatus for uterine cavity tissues comprises miniature peristaltic pump and conduit, and conduit 2 is sandwiched in the pump head 1 of peristaltic pump, and the surface of shell of peristaltic pump has nixie display 242, button 241.Nixie display 242 is used for showing the negative pressure when performing the operation, used time and adds up to perform the operation number of times.Button 241 is used to be provided with the displaying contents of parameter such as time, negative pressure of operation and selected nixie display 242, and button 241 is provided with (accumulative total) number of times key, pressure key, reset key, operation key, Pause key.The motor 3 of peristaltic pump drives pump head 1 extruding and loosens conduit 2, makes and produces negative pressure in the conduit 2.The probe 20 of conduit 2 one ends (can consult the signal of Fig. 4, Fig. 5) stretches in the uterine cavity, and under the effect of negative pressure, embryonal tissue is finished artificial drainage by conduit 2 sucking-offs.
Realize electronization, intelligentized purpose for reaching, this peristaltic pump adopts following control circuit, sees shown in Figure 2.
(1) cpu chip 041 (containing the crystal resonator 043 that local oscillation frequency is provided), cpu chip 041 is selected model AT89C52 for use, and control sequence is solidificated in the ROM program area of chip in advance.This cpu chip 041 is furnished with one and writes bin 042, writes bin 042 and selects model X5045 for use, can keep the default parameter that start moves as next time to the running parameter of each setting and service data, has simplified the operation of each start.
(2) rectification power circuit 140, comprise alternating current supply filter 141 and AC/DC transducer 142.Behind 220 volts of civil powers process alternating current supply filter 141 filtering interference signals, AC/DC transducer 142 output 5 couchers are connected to each integrated circuit component as voltage, as cpu chip 041, write bin 042, electric voltage/frequency converter 443, DC/DC modular converter 444, shift register 243, photothyristor 342 etc.
(3) input display circuit 240 is made up of button 241, nixie display 242, line scanning driver 244, shift register 243, and wherein line scanning driver 244 selects for use model UNL2803, shift register 243 to select model 74HC164 for use.One group of signal scanning output pin (P2.0-P2.7) of cpu chip 041 connects one to one with the signal scanning input pin (foot 8-1) of line scanning driver 244.The signal scanning output pin of line scanning driver 244 (foot 13-18) is connected to nixie display 242 incoming ends, and simultaneously wherein pin (foot P1.0) is returned in five scanning output pins (foot 14-18) scanning of being collected to cpu chip 041 separately behind button 241 of branch's series connection.Another group signal scanning output pin (foot P3.0 and P3.1) of cpu chip 041 is connected with the signal scanning input pin ( foot 1,2 and 8) of shift register 243, and the outfan of shift register 243 ( foot 3,4,5,6,10,11,12,13) is connected to another group signal incoming end (foot a, b, c, d, e, f, g, h) of nixie display 242.241 5 of buttons: (accumulative total) number of times key, pressure key, reset key, operation key, Pause key are arranged, can check the accumulative total number of run, set pressure, the time of this operation, the instruction of sending operation, suspend or resetting.Cpu chip 041 Scanner Entry Key dish set condition before the start operation shows with the output numeral, shows real-time negative pressure and operating time when start moves.
(4) motor-drive circuit, form by a two-way controllable silicon 341 and a photothyristor 342, the control signal output pin of cpu chip 041 (foot P1.3) connects the input (foot 2) of photothyristor 342, the outfan of photothyristor 342 (foot 4) is connected to the control signal input of bidirectional triode thyristor 341, the outfan of bidirectional triode thyristor 341 connects motor 3, and photothyristor 342 is selected model M03063 for use., there is negative pulse output in peristaltic pump when operation by the control signal output pin (foot P1.3) of cpu chip 041, and photothyristor 342 conductings trigger bidirectional triode thyristor 341 and make motor 3 work.When reaching the time that sets, negative pulse disappears at once, and the control signal output of cpu chip 041 transfers positive level to, and photothyristor 342 is closed bidirectional triode thyristor 341, and motor 3 quits work.
(5) negative pressure control circuit, form by pressure transducer 441, differential amplifier 442, electric voltage/frequency converter 443 and DC/DC modular converter 444, pressure transducer 441 is selected the bridge circuit of constant current power supply for use, differential amplifier 442 is selected model LM358 for use, and electric voltage/frequency converter 443 is selected model LM331 for use.Pressure transducer 441 circuit are connected to the circuit board (not shown) by circle pin head 4412 (seeing Fig. 4, Fig. 5), inductive head 4411 is communicated with conduit 2, the voltage signal output end of pressure transducer 441 is connected to the input (foot 5,6) of differential amplifier 442, the outfan of differential amplifier 442 (foot 7) is connected to the input pin (foot 7) of electric voltage/frequency converter 443, and electric voltage/frequency converter 443 output pins (foot 3) are connected to cpu chip 041 pressure signal input pin (foot P3.4).The Input voltage terminal of DC/DC modular converter 444 is inserted by the output voltage terminal of rectification power circuit 140, from 5 couchers of rectification power circuit 140 do voltage by DC/DC modular converter 444 be transformed into 10 couchers do voltage (5V to+5V) be connected to pressure transducer 441 and differential amplifier 442.Consult Fig. 3, in case inductive head 4411 is subjected to the suction function (consulting Fig. 4, Fig. 5 simultaneously) in the conduit 2, the pick off bridge circuit is given differential amplifier 442 after converting pressure signal to voltage signal, after will amplifying from the voltage signal of pressure transducer 441, deliver to electric voltage/frequency converter 443 through a potentiometer of regulating DC level.Electric voltage/frequency converter 443 is delivered to cpu chip 041 and default force value comparison after converting voltage signal to the frequency digital signal; as reach fiducial value; the control signal output of cpu chip 041 changes into positive level at once; photothyristor 342 is closed bidirectional triode thyristor 341 in advance; end motor 3 work, play a protective role, except that the one action counting that adds up; all treat that from newly resetting the operator checks the ready new round operation operation that enters.
Consult Fig. 4, Fig. 5, the inductive head 4411 of pressure transducer 441 can be communicated with tee pipe coupling 5 with conduit 2, filter 21 of serial connection between the probe 20 of conduit 2 one ends and tee pipe coupling 5, the uterine cavity tissue that can prevent sucking-off stops up the one section conduit 2 that leads to inductive head 4411, avoids the negative pressure control circuit to lose efficacy.For same purpose, can in the interface of these tee pipe coupling 5 connection pressure transducer inductive heads 4411, be provided with an interior siphunculus 51 that extends internally.
Claims (4)
1. a suction apparatus for uterine cavity tissues comprises miniature peristaltic pump and conduit; The control circuit of this peristaltic pump comprises:
(1) CPU; This CPU is furnished with one and writes bin;
(2) rectification power circuit;
It is characterized in that, also comprise
(3) input display circuit, by button, nixie display, the line scanning driver, shift register is formed, the one group of signal scanning output pin of CPU and the signal scanning input pin of line scanning driver connect one to one, pin is returned in the scanning that is collected to CPU separately behind button of branch series connection when the signal scanning output pin of line scanning driver is connected to the nixie display incoming end, another group signal scanning output pin of CPU is connected with the signal scanning input pin of shift register, and the outfan of shift register is connected to another group signal incoming end of nixie display;
(4) motor-drive circuit, form by a two-way controllable silicon and a photothyristor, the control signal output pin of CPU connects the input of photothyristor, and the outfan of photothyristor is connected to the control signal input of bidirectional triode thyristor, and the outfan of bidirectional triode thyristor connects motor;
(5) negative pressure control circuit, by pressure transducer, differential amplifier, electric voltage/frequency converter and DC/DC modular converter are formed, the inductive head of pressure transducer is communicated with conduit, the voltage signal output end of pressure transducer is connected to the input of differential amplifier, the outfan of differential amplifier is connected to the input pin of electric voltage/frequency converter, the electric voltage/frequency converter output pin is connected to CPU pressure signal input pin, the Input voltage terminal of DC/DC modular converter is inserted by the output voltage terminal of rectification power circuit, and the output voltage of DC/DC modular converter is connected to pressure transducer and differential amplifier.
2. suction apparatus for uterine cavity tissues according to claim 1 is characterized in that, the inductive head of pressure transducer is to be communicated with tee pipe coupling with conduit.
3. suction apparatus for uterine cavity tissues according to claim 1 and 2 is characterized in that, filter of described conduit serial connection.
4. suction apparatus for uterine cavity tissues according to claim 1 and 2 is characterized in that, the inductive head of pressure transducer is to be communicated with tee pipe coupling with conduit, is provided with an interior siphunculus in the interface of the connection pressure transducer inductive head of this tee pipe coupling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100539827A CN100348159C (en) | 2004-08-25 | 2004-08-25 | Hystero cavity tissue aspirator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100539827A CN100348159C (en) | 2004-08-25 | 2004-08-25 | Hystero cavity tissue aspirator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1739461A true CN1739461A (en) | 2006-03-01 |
| CN100348159C CN100348159C (en) | 2007-11-14 |
Family
ID=36092090
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100539827A Expired - Fee Related CN100348159C (en) | 2004-08-25 | 2004-08-25 | Hystero cavity tissue aspirator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100348159C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104314795A (en) * | 2014-10-14 | 2015-01-28 | 台州韩进泵业有限公司 | Pump control device, constant-pressure speed regulating control device and method, micro-pump and water pump |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19502305C2 (en) * | 1995-01-26 | 2002-01-17 | Geuder Hans Gmbh | Apparatus for aspirating lens debris in cataract surgery |
| JP3905291B2 (en) * | 1999-10-06 | 2007-04-18 | 株式会社ニデック | Ophthalmic perfusion suction device |
| CN2488478Y (en) * | 2001-08-03 | 2002-05-01 | 徐�明 | Fully automatic anti-early-pregnancy device |
| CN2577848Y (en) * | 2002-10-22 | 2003-10-08 | 王钦尧 | Negative pressure suctor |
-
2004
- 2004-08-25 CN CNB2004100539827A patent/CN100348159C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104314795A (en) * | 2014-10-14 | 2015-01-28 | 台州韩进泵业有限公司 | Pump control device, constant-pressure speed regulating control device and method, micro-pump and water pump |
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| Publication number | Publication date |
|---|---|
| CN100348159C (en) | 2007-11-14 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20071114 Termination date: 20180825 |